Hello, I noticed your conversation and wanted to offer some assistance. There is a lot of information to cover, so I apologize for the length of my response. Jon, to answer your original question regarding cold cranking amps, you do not need to be concerned about a battery with high cold cranking amps shortening the life of your starter. Cold cranking amps are an important consideration if you live somewhere cold, but less of a consideration in more temperate climates. The important thing to look for in cranking amps is a battery that meets or exceeds the specifications for your engine.
Reserve capacity and deep-cycle capability may also be an important consideration for those who run significant electrical accessories, like winches or large stereos. There is also a significant difference in performance and longevity between flooded and AGM lead-acid batteries, which is also reflected in a difference in price. The internal resistance of our batteries is very low and gives the design the ability to quickly withdraw high power on discharge and subsequently, to quickly return the power on charge. When any battery is overcharged with high-amperage, unregulated chargers (like a 200-amp shop charger), they can vent gas or worse. However, the “sealed” design of AGM batteries will greatly reduce the chance of a battery leaking or venting.
Many of the “bad” batteries returned to us under warranty are just deeply-discharged and work fine, when properly-recharged. Unfortunately, many battery chargers will not recognize or charge any battery that has been discharged below a certain voltage threshold (usually around 10.5 volts). This is a charger issue and not unique to Optima. In fact, some battery companies have dealt with this by simply voiding the warranty of any battery deemed to be “over-discharged” below a certain voltage level. We decided a better option was to create this video which explains how to recharge deeply-discharged batteries with a parallel charging technique.
It is standard practice for all battery manufacturers to “charge and check” batteries returned under warranty, as many of these batteries do end up simply being deeply-discharged. This happens en masse in the springtime, when people are bringing boats and summer cars out of storage. These procedures generally involve an attempt to fully-charge a battery and then load testing it. If you are concerned about the health of your battery, many battery specialists can perform a load-test for a minimal charge and some will even offer it for free.
The free replacement warranty on all consumer RedTops and YellowTops is three years, with no pro-ration. However, if any battery fails from a manufacturing defect, it is likely to do so well within the first year, if not the first month. The list of manufacturers Glenn provided is not current and changes fairly regularly. Optima is owned by Johnson Controls, but we manufacture all of our own batteries, in our own facility. While other brands of batteries may also have colored lids and be generically referred to as “YellowTops” or “RedTops,” we never re-brand or re-spec our batteries for any retailer.
Glenn does offer good advice about making sure a battery is fully-charged. All battery retailers are supposed to check and maintain voltage in their inventory and for the most part, that is the case. However, with millions of batteries being sold every year, it is impossible to make sure than happens with 100% certainty. Fully-charged, our RedTops should measure approximately 12.6-12.8 volts and our YellowTops should measure approximately 13.0-13.2 volts. I cannot speak for other manufacturers, but I had never heard that the blacker the box, the heavier the battery. The opposite is actually the case for Optima batteries. Our batteries with light-gray cases (all YellowTops and most BlueTops) are dual-purpose, starting and deep-cycle batteries, designed and warrantied for those applications. All RedTops and 34M BlueTops are starting batteries, as indicated by dark gray cases. Those batteries are not designed or warrantied for deep-cycle applications and are physically lighter than their deep-cycle group size counterparts. If anyone has any questions about our batteries, I'll do my best to answer them.
Jim McIlvaine
eCare Manager, OPTIMA Batteries, Inc.
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